Anchor bolt



FIG. 1 is a perspective view from the left of the anchor bolt in accordance with the design;

FIG. 2 is a side view from the right;

FIG. 3 is a plan view;

FIG. 4 is a side view from the left;

FIG. 5 is a bottom view;

FIG. 6 is a front view; and,

FIG. 7 is a rear view. 

I claim the ornamental design for an anchor bolt, as shown and described. 